Replaceable drill bit nozzles,申请号US19630304531-传众专利搜索

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发明名称	Replaceable drill bit nozzles
摘要
申请公布号	US3220754(A)	申请公布日期	1965.11.30
申请号	US19630304531	申请日期	1963.08.26
申请人	CHRISTENSEN DIAMOND PRODUCTS COMPANY	发明人	MORI TAKESHI
分类号	E21B10/60;E21B10/61	主分类号	E21B10/60
代理机构		代理人
主权项
地址

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